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- W2105460881 abstract "The translational GTPases promote initiation, elongation, and termination of protein synthesis by interacting with the ribosome. Mutations that impair GTP hydrolysis by eukaryotic translation initiation factor 5B/initiation factor 2 (eIF5B/IF2) impair yeast cell growth due to failure to dissociate from the ribosome following subunit joining. A mutation in helix h5 of the 18S rRNA in the 40S ribosomal subunit and intragenic mutations in domain II of eIF5B suppress the toxic effects associated with expression of the eIF5B-H480I GTPase-deficient mutant in yeast by lowering the ribosome binding affinity of eIF5B. Hydroxyl radical mapping experiments reveal that the domain II suppressors interface with the body of the 40S subunit in the vicinity of helix h5. As the helix h5 mutation also impairs elongation factor function, the rRNA and eIF5B suppressor mutations provide in vivo evidence supporting a functionally important docking of domain II of the translational GTPases on the body of the small ribosomal subunit." @default.
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- W2105460881 date "2009-02-01" @default.
- W2105460881 modified "2023-09-24" @default.
- W2105460881 title "rRNA Suppressor of a Eukaryotic Translation Initiation Factor 5B/Initiation Factor 2 Mutant Reveals a Binding Site for Translational GTPases on the Small Ribosomal Subunit" @default.
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- W2105460881 doi "https://doi.org/10.1128/mcb.00896-08" @default.
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